Drinking vessel



FIG. 1 is a perspective view of a drinking vessel showing my new design;

FIG. 2 is a side view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a bottom perspective view thereof.

Any broken lines shown represent unclaimed subject matter and form no part of the claimed design. 

CLAIM The ornamental design for a drinking vessel, as shown and described. 